/*
 * Copyright 2006 Brian Watkins
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */


package bw.weather;

import bw.refresh.*;
import java.util.*;

public class WeatherRefresherSource implements RefreshableSource
{
    public WeatherRefresherSource ()
    {
        //nothing
    }

    public Iterator getRefreshables ()
    {
        WeatherManager manager = WeatherManager.getInstance();

        //get the locations. All this does is touch the memcache.
        //doing this here will help with performance issues on the weather page
        manager.getLocations();

        //just fetch whatever is the current report. the reasoning
        //is that really we will not be looking at other locations
        //often enough to justify fetching all of them every hour
        WeatherLocation loc = manager.findLocationById( manager.getCurrentLocationId() );
        Vector v = new Vector();
        if ( loc != null ) 
        {
            v.addElement( loc );
        }

        return v.iterator();
    }

}